Asphalt Institute Vacuum Viscometers

Asphalt Institute Vacuum Viscometers are used to measure highly viscous materials such as bitumen, also known as asphalt cement.

A minimum sample size of 3mL and a bath depth of 7in (180mm) are required for testing. The elapsed time for a fixed volume of liquid to be drawn through the capillary tube is multiplied by a constant to determine absolute viscosity. Capillary is graduated and a Certificate of Calibration is included with each Viscometer. The 2in (51mm) Viscometer Neoprene Holder is required for operation to secure the viscometers and can be purchased separately. A Constant Temperature Viscosity Bath is also available separately.

The Asphalt Institute Vacuum Viscometers come in five models of varying sizes and ranges of viscosity. Each model measures viscosity at 140°F (60°C).

PT-111, Size 25, has a viscosity range of 42–800 poise.
PT-112, Size 50, has a viscosity range of 180–3,200 poise.
PT-113, Size 100, has a viscosity range of 600–12,800 poise.
PT-114, Size 200, has a viscosity range of 2,400–52,000 poise.
PT-115, Size 400, has a viscosity range of 9,600–200,000 poise.

Features:

• Measures viscosity of bitumen or other highly-viscous materials at 140°F (60°C)
• Models are available in different sizes and viscosity ranges

Included Items:

• Asphalt Institute Vacuum Viscometer (Size 25, 50, 100, 200, or 400)
• Certificate of Calibration

Accessories:

• PTA-100 Viscometer Neoprene Holder for sturdy base support of Asphalt Institute Vacuum Viscometer
• Constant Temperature Viscosity Bath used with capillary viscometers